CN101156374A - System and method for monitoring video call - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/30—Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information
- H04L63/306—Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information intercepting packet switched data communications, e.g. Web, Internet or IMS communications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1106—Call signalling protocols; H.323 and related
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
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Abstract
A system for monitoring video call is used to monitor the video communication between the calling video terminal and the called video terminal. The system includes an MSC server, a media gateway, a video gateway and a monitoring receipt unit. When the calling video terminal initiates a video call to the called video terminal, the MSC server indicates the media gateway to copy the call data of the calling and called video terminals and send it to the video gateway, indicates the video gateway to de-multiplex the audio stream and video stream from the call data of the calling and called video terminals. The video gateway sends the audio stream and video stream to the monitoring receipt unit to be played. There is also a method for monitoring video call in the invention. The invention can achieve the monitoring of video call, supply the gap of the art, enable the monitoring unlimited to the place and time and the monitoring more flexible based on the above system and method.
Description
A kind of system and method for monitoring video-calling
Technical field
The present invention relates to the video tracking technology of moving communicating field, more precisely, it is related to a kind of system and method for monitoring video-calling.Background of invention
Video call（VP, Video Phone) it is defined as the untethered data message based on 64k in 3G（UDI, Unrestricted Data Information) data service.It allows calling both sides mutually to see the image taken by the camera on distant terminal.Video data, voice data and control data are multiplexed together by the data service of the 64k, every kind of information takes a logical channel, that is to say, that video data takes video logic passage, voice data takes audio logical channel, and control data takes control logic passage.
Monitoring is to give national security personnel, include a kind of means that police, army, the Guoan departmental staff of monitoring right provide, these personnel allow on the premise of crime one's share of expenses for a joint undertaking or suspicion personnel's telephone number is known, by these number notifyings to interchanger, to obtain the Content of communciation of controlled number.So, when crime one's share of expenses for a joint undertaking or suspicion personnel are conversed or other activities, such as when sending, receiving short message, start, shutdown, location updating, Security Officer can have gained some understanding to the state of crime one's share of expenses for a joint undertaking or suspicion personnel.
It is existing to monitor the monitoring for being all based on voice, when crime one's share of expenses for a joint undertaking or suspicion personnel are conversed, interchanger is routed directly to listening center by next voice data is copied in communication process, is typically that dialog context is output into some telephone number specified.
By monitoring the significance having for national security, at present in many countries, monitor as one of networking condition of switch device, be widely used.And for national security personnel, single Pure audio monitoring is gradually not content with now, should especially with VP
It is more prevalent, crime one's share of expenses for a joint undertaking etc. is also greatly increased using VP probability, therefore the urgency of video monitor is consequently increased, image taken by camera on both terminal in communication process is monitored, further to obtain, Security Officer is interested and more intuitively information, such as geographical position, character image etc..The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of system and method for monitoring video-calling, video call is monitored. .
The purpose of the present invention is achieved by the following technical solution：
A kind of system of monitoring video-calling, for monitoring the video communication between caller video terminal and called video terminal, it includes moving exchanging center MSC server, WMG, video gateway and monitoring reception unit；
MSC server sends calling, and control the call data of WMG duplication caller and called video terminal after caller video terminal initiates video call to called video terminal to video gateway；
Fen Do replicate the call data of caller and called video terminal to WMG under control of the msc server, and the call data of duplication are sent to video gateway；
Video gateway receives the calling that MSC server is sent, and sets up and is connected with WMG, receives the call data that WMG is replicated；After the demultiplexed audio stream of call data and video flowing, audio stream, video flowing and control signaling are sent to monitoring reception unit；
Monitoring reception unit plays demultiplexed audio stream and video flowing according to control signaling.
A kind of method of monitoring video-calling, for monitoring the video communication between caller video terminal and called video terminal, it includes：
After caller video terminal initiates video call to called video terminal, the call data of caller and called video terminal are replicated respectively；
Played from the call data of duplication after demultiplexed audio and video stream at monitoring reception end.As can be seen from the above technical solutions, the present invention is replicated using WMG (MGW) to the call data for being controlled user, then in video gateway（VIG call data are demultiplexing as after audio stream and video flowing on), monitoring reception end is sent to, compensate for prior art does not have the blank of video monitor.
According to a preferred embodiment of the present invention, the call data of controlled user are converted into RTP streams and are broadcast to by RTSP server on network, it can be monitored by accessing the form of website, specific place or terminal are no longer limited to so that monitoring, connection online can be carried out monitoring in any form, make the realization of monitoring more flexible.
According to a preferred embodiment of the present invention, blender is utilized（Muxer demultiplexed audio stream and video flowing) are compressed storage, the audio stream and video flowing of storage are played when needed, monitoring is not restricted by the time, makes the realization of monitoring more flexible.
According to another preferred embodiment of the invention, VIG directly sends audio stream and video flowing in the form of TDM flows to H.324M terminal, H.324M the terminal plays audio stream and video flowing, because H.324M terminal is 3G mobile terminals so that the place of monitoring is more unrestricted.Brief Description Of Drawings
Figure la is the system structure diagram of the monitoring video-calling of the embodiment of the present invention one.
Figure lb is the mobile switching centre of the embodiment of the present invention one（MSC) the structural representation of server.
Figure lc is the WMG of the embodiment of the present invention one（MGW structural representation).
Figure Id is the video gateway of the embodiment of the present invention one（VIG structural representation).
Figure le is the method flow diagram of the monitoring video-calling of the embodiment of the present invention one.
Fig. 2 a are the system structure diagrams of the monitoring video-calling of the embodiment of the present invention two.
Fig. 2 b are the video gateway of the embodiment of the present invention two（VIG structural representation).
Fig. 3 is the system structure diagram of the monitoring video-calling of the embodiment of the present invention three.
Fig. 4 is the system structure diagram of the monitoring video-calling of the embodiment of the present invention four.
Fig. 5 is the system structure diagram of the monitoring video-calling of the embodiment of the present invention five.Implement the mode of the present invention
In order that the object, technical solutions and advantages of the present invention become apparent from, the invention will be further described with reference to the accompanying drawings and detailed description.
The present invention core concept be：Mobile switching centre（MSC, Mobile Switching Center) server is when a video terminal initiates video call to another video terminal, indicating media gateway（MGW, Media GateWay) call data of two video terminals are replicated, and indicate video gateway（VIG, Video Inter-working Gateway) call data that MGW is replicated are received, and call data are demultiplexing as after audio stream and video flowing, it is sent to monitoring reception unit.
Embodiment one：
Figure la is the system structure diagram of the monitoring video-calling of the embodiment of the present invention one.As schemed shown in la, in embodiment one, the system of monitoring video-calling includes：Video terminal eight, video terminal B, MSC server, MGW, VIG, real-time stream media protocol（RTSP, Real Time Streaming Protocol) server, blender（Muxer), storage device, RTSP Website servers and RTSP terminals.These network entities are introduced separately below：
(1) the video terminal A and video terminal B are the mobile terminals with video communication function.
(2) MSC server is as chain of command, and the number for the controlled user that is stored with, the Subscriber Number can be set by listening center；Controlled user's caller or it is called when, control MGW carries out the duplication on loading end, and sends calling to VIG, notifies VIG to receive the channel information of the call data of MGW duplications.In this embodiment, the MSC server can be that video is whole
Hold the affiliated MSC servers of A, it should be appreciated that the MSC server can also be the affiliated MSC servers of video terminal B.
(3) MGW under control of the msc server, replicates the uplink and downlink VP call data of controlled user, is then forwarded to VIG as loading end.It is exactly specifically, if calling party is controlled user, the call data of the uplink and downlink of duplication calling party are needed, the downlink call data of calling party are the upstream datas of callee, therefore duplication is the up call data of calling party and the up call data of callee；If callee is controlled user, need the call data of the uplink and downlink of duplication callee, the downlink call data of callee are the up call data of calling party, therefore duplication is still the up call data of callee and the up call data of calling party.Therefore, no matter calling party or callee are controlled users, and the data of duplication are identicals, respectively the up call data of calling party and the up call data of callee.
(4) calling that VIG is sent according to MSC server is set up with MGW and is connected, and the call data that MGW is sent is handled on loading end, demultiplexed audio stream and video flowing are converted to RTP（RTP, Real-Time transport protocol) stream, it is sent to RTSP via Muxer and takes business devices；Sent in chain of command by RTSP agreements to RTSP server and flow address information and the control signaling of coding/decoding information comprising RTP；VIG has the function of making and update the PORTAL pages, once VIG receives calling, that is, updates and monitors interface, the number of controlled user is listed on the PORTAL pages by such as PORTAL pages.
(5) rtp streaming received is transmitted to RTSP server by Muxer, and is stored in storage device after rtp streaming to be converted to the file of stream media format, and the stream media format file after storage can also be read by RTSP server.The present invention can not also include the Muxer, and now rtp streaming is sent directly to RTSP server by VIG.
(6) Muxer received is forwarded the rtp streaming come as living broadcast of programs source by RTSP server, passes through Web broadcast；The stream media format file that storage device can also be preserved passes through Web broadcast as living broadcast of programs source.
(7) RTSP Website servers receive the rtp streaming of RTSP server broadcast, and rtp streaming is associated with monitoring the number of the controlled user shown on interface, i.e. the POTAL pages.
(8) RTSP terminals are by the POTAL pages of browser access RTSP Website servers, and the number for clicking on controlled user carries out real-time video monitor, or accesses the video file of the eavesdropping target stored.
Above-mentioned Muxer, storage device, RTSP server, RTSP Website servers and RTSP terminals belongs to monitoring reception unit, and its work completed is that the Voice ＆ Video data for listening to controlled user are reduced, and plays Voice ＆ Video data.
Above-mentioned Muxer, storage device and RTSP server can be located in same physical entity, and Muxer can also be located in same physical entity with VIG.If Muxer is not located at same physical entity with RTSP server, so need in RTSP server and Muxer while installing shared procotol, to forward rtp streaming to RTSP server by Muxer in time, or the Muxer stream media format files stored are sent to RTSP server in time.
Figure lb is the structural representation of the MSC server of the embodiment of the present invention one.As schemed shown in lb, the part relevant with video monitor includes monitoring users judging unit, video call recognition unit and video monitor control unit in the MSC server of embodiment one.Wherein, when monitoring users judging unit receives the calling of terminal user, whether the caller or called number for judging calling are the number of controlled user, if being controlled Subscriber Number, then explanation needs to start the monitoring to the calling, routes the call to video call recognition unit；Otherwise, the processing unit of normal call is routed the call to；Video call recognition unit is when receiving the calling that monitoring users judging unit route is come, according to calling whether comprising 64k UDI come judge calling whether be video call, if the UDI comprising 64k, it is video call then to illustrate calling, and video call is routed into video monitor control unit；Otherwise, route the call in the processing unit for monitoring audio call；Video monitor control unit performs following functions when receiving the video call that video call recognition unit route is come：Send two callings respectively to VIG, i.e., one include calling number initial address message（IAM,
Initial Address Message), one include called number IAM message, indicate that VIG is set up and contacted with MGW；Sent to MGW and replicate indication signaling, indicate that MGW replicates two-way call data respectively.
Figure lc is the MGW of the embodiment of the present invention one structural representation.As schemed shown in lc, the part relevant with video monitor includes call data copied cells and call data transmitting element in the MGW of embodiment one.Wherein, call data copied cells replicates the up call data of calling party and callee, the up call data of calling party and callee then is respectively sent into call data transmitting element respectively under the instruction of MSC server；Call data transmitting element respectively sends the up call data of calling party and callee to VIG.
Figure Id is the VIG of the embodiment of the present invention one structural representation.As schemed shown in Id, the part relevant with video monitor includes call processing unit, H.245 processing unit, data demultiplexing unit and media transmitting element in the VIG of embodiment one.Wherein, call processing unit sends calling number and called number to RTSP Website servers when receiving the calling of MSC server, or only sends the number in caller and called number as controlled number to RTSP Website servers；H.245 processing unit is terminated the H.245 negotiation included in calling party and callee's up call data respectively, and the up call data of calling party and callee then are respectively sent into call data processing unit；Video OLC message in calling party's up call data is copied to callee's up call data by data demultiplexing unit, then according to calling party and the audio OLC message and video OLC message of the up call data of callee, by audio stream and video flowing respectively from call data, for example in H.223 flowing demultiplex and come out, send to media transmitting element；Audio stream and video flowing are converted to rtp streaming and sent to monitoring reception unit by media transmitting element, are sent in the present embodiment to the Muxer of monitoring reception unit.
The reason for video OLC message in the above-mentioned up call data by calling party is copied to callee's up call data be：For voice data, the terminal of calling both sides can all send OLC message, and telling other side's audio is transmitted on which channel, but for video data, only has master
The side of crying sends OLC message, and two callings monitored are independent, between do not associate, therefore VIG need between two data exchange OLC message, it is necessary to the video OLC message in calling party's up call data is copied to callee's up call data.
The method to the monitoring video-calling of embodiment one describes in detail below, and this method is based on the system shown in figure la.Fig. 5 is the method flow diagram of the monitoring video-calling of the embodiment of the present invention one.As schemed shown in le, in embodiment one, monitoring video-calling specifically includes following steps：
Step 101:The number of controlled user is stored in MSC server, can be that the number of controlled user is arranged and stored in MSC server or directly sets and store the number of controlled user in MSC server by listening center by motoring gateway.
Step 102:Video terminal A sends video call to video terminal B.
Step 103:MSC server receives the calling that video terminal A is sent to video terminal B, extract caller and the called number of calling, according to the number of the controlled user of storage, judge whether caller or called number are the number for being controlled user, if caller or called number are controlled numbers, Bu Sudden 104 are performed;If caller and called number are not controlled number, terminate this flow, perform the flow that continues of normal call.
Step 104:MSC server judges its UDI for whether including 64K, if comprising it is video call to illustrate the calling, performs step 105;Otherwise, terminate this flow, perform the flow that continues that audio call is monitored.
Step 105:MSC server passes through ISDN（ISDN, Integrated Service Digital Network) User Part（ISUP, ISDN User Part) agreement, Telephone User Part (TUP, Telephone User Part) agreement or primary rate adaptation（PRA, Primary Rate Adaptation) agreement sends calling to VIG, due to needing that uplink and downlink call data are monitored respectively, so up send a calling, include the IAM message of calling number, descending one calling of transmission, i.e., the IAM message comprising called number, the two are sent by ISUP, PRA or TUP signaling to VIG to call, described two callings include the letter for receiving call data from MGW
The control signaling of road information；MSG servers send the instruction replicated to the uplink and downlink data for being controlled user by H.248 signaling to MGW.
Step 106:MGW is under the instruction of MSC server, it is utilized respectively end points 1 and end points 2 replicates uplink and downlink call data, that is the up call data of calling party and the up call data of callee, and, calling party's up call data of end points 1 are replicated using end points 3, callee's up call data of end points 2 are replicated using end points 4, then the call data of end points 3 and end points 4 are sent to VIG, for example, pass through the call data after H.324M agreement transmission copying to VIG.
Step 107:VIG is received after the calling of MSC server, sets up the connection with MGW, receiving endpoint 3 and end points 4 are sent respectively calling party and the up call data of callee；Meanwhile, VIG updates the monitoring interface on RTSP Website servers, and the calling and/or called number as controlled Subscriber Number is listed in the real-time monitoring column on the PORTAL pages by such as PORTAL pages.
Bu Sudden 108:The H.245 negotiation that VIG terminates included in the call data that end points 3 and end points 4 send respectively.Because monitoring is the duplication to being controlled the uplink and downlink call data of user, so VIG can receive the H.245 negotiation message that video terminal A and video terminal B is initiated, VIG behavior can not influence the behavior of video terminal, so after the H.245 negotiation message from video terminal A and video terminal B is received, it can not send and receive the response to video terminal A and video terminal B, therefore the H.245 negotiation that VIG is supported is unidirectional.
Step 109:VIG is by the up call data from calling party, i.e., the video that the call data that end points 3 is sent are included opens logic channel（OLC, Open Logic Channel) message is copied to the up call data of callee, i.e., the call data that end points 4 is sent.Because, for voice data, the terminal of calling both sides can all send OLC message, telling other side's audio is transmitted on which channel, but for video data, only have calling party and send OLC message, and two callings monitored are independent, between do not associate, therefore VIG need between two data exchange OLC message.
Step 110:VIG is according to the audio OLC and video OLC message of calling party's up call data and callee's up call data, audio stream and video flowing are demultiplexed from the H.223 stream of carrying calling party and callee's up call data respectively and come out, rtp streaming is converted to.
Step 111:The declaration for the RTSP agreements that VIG passes through standard（Announce) flow, by the IP address comprising rtp streaming, port numbers, encoding and decoding（CODEC) control signaling of information etc. is sent to RTSP server, and the rtp streaming after being converted into is sent to Muxer.
Bu Sudden 112:Rtp streaming is transmitted to RTSP server by Muxer；Rtp streaming is compressed simultaneously, is converted to and is stored after stream media format file, such as RM files or 3GP files in storage device, the stream media format file stored can also be read by RTSP server as historical data.
Step 113:The control signaling that RTSP server is sent according to VIG, the rtp streaming that Muxer is forwarded is broadcasted as program source by network；Or using the data of the stream media format file stored in storage device as program source, Tong Guo Wang Network are broadcasted.
Walk Recording 114:RTSP Website servers receive the rtp streaming of RTSP server broadcast, and it is associated with monitoring the Subscriber Number that column is shown on the PORTAL pages.
Step 115:The PORTAL pages for the browser access RTSP Website servers that monitoring personnel pass through RTSP terminals, click on the number of controlled user, are monitored.
Embodiment two：
Fig. 2 a are the system structure diagrams of the monitoring video-calling of the embodiment of the present invention two.As shown in Figure 2 a, in embodiment two, the system of monitoring video-calling includes：Video terminal, video terminal B, MSC server 1, MGW, VIG, MSC server 2 and H.324M terminal.Video terminal therein, video terminal ^ MSC servers 1, MGW are same with function phase described in embodiment one respectively, and VIG function is slightly different, and by MSC server 2 and H.324M terminal as the present embodiment monitoring reception unit.Wherein, MSC server 1 is the MSC server at monitored end, and MSC server 2 is to monitor the MSC server at end.It should be understood that MSC
Server 1 and MSC server 2 are likely to be same MSC server.The difference of the present embodiment and embodiment one is highlighted below：
(1) calling that VIG is sent according to MSC server 1 is set up with MGW and is connected, the call data that MGW is sent are handled on loading end, demultiplexed Voice ＆ Video data, the audio and video stream is TDM stream, protocol conversion need not be carried out, the current affiliated MSC server 2 of H.324M terminal is transmitted directly to;The control signaling comprising TDM stream address information and coding/decoding information is sent to the current affiliated MSC server 2 of H.324M terminal by RTSP agreements in chain of command.
(2) MSC server 2 be H.324M terminal it is current belonging to MSC server, the TDM stream that VIG is sent can be sent to H.324M terminal.
(3) H.324M terminal is 3G mobile, receives the TDM stream that VIG is sent, then plays Voice ＆ Video data.
In the present embodiment, part relevant with video monitor in MSC server 1 and in MGW and the relevant portion of embodiment one are identical, will not be described here.
Referring to Fig. 2 b, in the present embodiment, the part relevant with video monitor includes H.245 processing unit, data demultiplexing unit and media transmitting element in VIG.Wherein, H.245 processing unit is identical with data demultiplexing unit and the function of embodiment one, will not be described here；Voice and video circulation is changed to TDM stream and sent to monitoring reception unit by media transmission, is sent in the present embodiment to MSC server 2.MSC server 2 sends TDM stream to H.324M terminal.
The present embodiment can realize the scheme realized and monitored using mobile terminal, and monitoring personnel need not be kept in fixed monitoring place, be that monitoring can be achieved using mobile phone.
Embodiment three：
Fig. 3 is the system structure diagram of the monitoring video-calling of the embodiment of the present invention three.As shown in Fig. 3, in embodiment three, the system of monitoring video-calling includes：Video terminal eight, video terminal B, MSC server, MGW, H.323 VIG, multipoint control unit（ MCU,
Multi-Console Unit) and more than one H.323 terminal.By H.323 MCU and H.323 video terminal therein, video terminal B, MSC server, MGW are same with function phase described in embodiment one respectively, and VIG function is slightly different, and terminal is used as monitoring reception unit.The difference of the present embodiment and embodiment one is highlighted below：
(1) calling that VIG is sent according to MSC server is set up with MGW and is connected, and the call data that MGW is sent is handled on loading end, demultiplexed Voice ＆ Video data are converted to rtp streaming, are sent to H.323 MCU;The control signaling comprising rtp streaming address information and coding/decoding information is sent to H.323 MCU by RTSP agreements in chain of command.
(2) H.323 MCU receives the rtp streamings sent of VIG, to more than one H.323 terminal send Voice ＆ Video data.
(3) more than one H.323 terminal plays Voice ＆ Video data.
In the present embodiment, part relevant with video monitor in MSC server and in MGW and the relevant portion of embodiment one are identical, will not be described here.
In the present embodiment, part relevant with video monitor in VIG includes H.245 processing unit, data demultiplexing unit and media transmission.Wherein, H.245 processing unit is identical with data demultiplexing unit and the function of embodiment one, will not be described here；Voice and video circulation is changed to RTP streams and sent to monitoring reception unit by media transmitting element, is sent in the present embodiment to H.323 MCU.The present embodiment can realize multiple H.323 terminals while listening for.,
Example IV：
Fig. 4 is the system structure diagram of the monitoring video-calling of the embodiment of the present invention four.As shown in Fig. 4, in example IV, the system of monitoring video-calling includes：Video terminal eight, video terminal 8, MSC server, MGW, VIG, session initiation protocol（SIP, Session Initiation Protocol) MCU and more than one sip terminal.Video terminal therein, video terminal B, MSC server, MGW are same with function phase described in embodiment one respectively, and VIG function is slightly different, and is used as monitoring reception unit by SIP MCU and sip terminal.Highlight this below
The difference of embodiment and embodiment one：
(1) VIG has SIP functions, the calling sent according to MSC server is set up with MGW and is connected, and the call data that MGW is sent is handled on loading end, demultiplexed Voice ＆ Video data, rtp streaming is converted to, SIP MCU are sent to;The control signaling comprising rtp streaming address information and coding/decoding information is sent to SIP MCU by Session Initiation Protocol in chain of command.
(2) SIP MCU receive the rtp streaming that VIG is sent, and Voice ＆ Video data are sent to sip terminal.
(3) sip terminal plays Voice ＆ Video data.
In the present embodiment, part relevant with video monitor in MSC server and in MGW and the relevant portion of embodiment one are identical, will not be described here.
In the present embodiment, part relevant with video monitor in VIG includes H.245 processing unit, data demultiplexing unit and media transmitting element.Wherein, H.245 processing unit is identical with data demultiplexing unit and the function of embodiment one, will not be described here；Voice and video circulation is changed to rtp streaming and sent to monitoring reception unit by media transmitting element, is sent in the present embodiment to SIP MCU.The present embodiment can realize multiple sip terminals while listening for.
Embodiment five：
Fig. 5 is the system structure diagram of the monitoring video-calling of the embodiment of the present invention five.As shown in Fig. 5, in embodiment five, the system of monitoring video-calling includes：Video terminal A, video terminal B, MSC, MGW, VIG and sip terminal.Video terminal A therein, video terminal B, MSC, MGW are same with function phase described in embodiment one respectively, and VIG function is slightly different, and is used as monitoring reception unit by sip terminal.The difference of the present embodiment and embodiment one is highlighted below：
(1) VIG has SIP functions, and the calling sent according to MSC is set up with MGW and is connected, and the call data that MGW is sent is handled on loading end, demultiplexed Voice ＆ Video data are converted to rtp streaming, are sent to sip terminal；It is whole to SIP by Session Initiation Protocol in chain of command
End sends the control signaling comprising rtp streaming address information and coding/decoding information.
(2) sip terminal plays Voice ＆ Video data.
In the present embodiment, part relevant with video monitor in MSC and in MGW and the relevant portion of embodiment one are identical, will not be described here.
In the present embodiment, part relevant with video monitor in VIG includes H.245 processing unit, data demultiplexing unit and media transmitting element.Wherein, H.245 processing unit is identical with data demultiplexing unit and the function of embodiment one, will not be described here；Voice and video circulation is changed to rtp streaming and sent to monitoring reception unit by media transmitting element, is sent in the present embodiment to SIP terminals.
Can be to being improved appropriately according to a preferred embodiment of the invention, to adapt to the specific needs of concrete condition in specific implementation process.It will therefore be appreciated that the embodiment of invention as described herein is to play an exemplary role, the protection domain being not intended to limit the invention.
Claims (1)
- Claims1st, a kind of system of monitoring video-calling, for monitoring the video communication between caller video terminal and called video terminal, it is characterised in that including moving exchanging center MSC server, WMG, video gateway and monitoring reception unit；MSC server sends calling, and control the call data of WMG duplication caller and called video terminal after caller video terminal initiates video call to called video terminal to video gateway；WMG replicates the call data of caller and called video terminal respectively under control of the msc server, and the call data of duplication are sent to video gateway；Video gateway receives the calling that MSC server is sent, and sets up and is connected with WMG, receives the call data that WMG is replicated；After the demultiplexed audio stream of call data and video flowing, audio stream, video flowing and control signaling are sent to monitoring reception unit；Monitoring reception unit plays demultiplexed audio stream and video flowing according to control signaling.2nd, system according to claim 1, it is characterised in that the monitoring reception unit includes H.323 multipoint control unit and at least one H.323 terminal；The video gateway, which is converted to call data, to be sent after realtime transmission protocol RTP stream to H.323 multipoint control unit, and H.323 multipoint control unit sends RTP streams at least one H.323 terminal；At least one described H.323 terminal plays rtp streaming.3rd, system according to claim 1, it is characterised in that the monitoring reception unit includes monitoring end MSC server and H.324M terminal；The video gateway sends audio stream and video flow to monitoring end MSC server；Monitoring end MSC server is by audio stream and video stream to H.324M terminal；H.324M terminal plays are received audio stream and video flowing. 4th, system according to claim 3, it is characterised in that the MSC server and monitoring end MSC server are same MSC server.5th, system according to claim 1, it is characterised in that the monitoring reception unit includes SIP SIP multipoint control units and at least one sip terminal；The video gateway, which is converted to call data, to be sent after rtp streaming to SIP multipoint control units, and SIP multipoint control units send rtp streaming at least one sip terminal；At least one described sip terminal plays rtp streaming.6th, system according to claim 1, it is characterised in that the monitoring reception unit includes sip terminal；Call data are converted to and sent after rtp streaming to sip terminal by the video gateway；Sip terminal plays rtp streaming.7th, system according to claim 1, it is characterised in that the monitoring reception unit includes real-time stream media protocol RTSP server, RTSP Website servers and RTSP terminals；The video gateway is after the calling of MSC server is received, in the number for monitoring addition caller and called video terminal on interface of RTSP Website servers；The video gateway, which is converted to call data, to be sent after RTP streams to RTSP server, and RTSP server broadcasts received rtp streaming by network to RTSP Website servers；RTSP Website servers receive the rtp streaming of RTSP server broadcast, and rtp streaming is associated with the caller on monitoring interface and the number of called video terminal；RTSP terminals play rtp streaming by logging in the monitoring interface of RTSP Website servers.8th, system according to claim 7, it is characterised in that further comprise blender；The rtp streaming that video gateway is sent is forwarded to RTSP server by the blender.9th, system according to claim 8, it is characterised in that further comprise storage device；The rtp streaming that video gateway is sent is compressed by the blender, is stored in after being converted to stream media format file in storage device； The storage device sends the media stream file after compression to RTSP servers, and the TSP servers are broadcasted after being decompressed to media stream file by network to RTSP Website servers.10th, system according to any one of claim 1 to 9, characterized in that, the calling that the MSC server is sent to video gateway is adapted to PRA agreements by ISUP ISDN User Part, Telephone User Part Telephone User Part or primary rate and carried.11st, the system according to any one of claim 2 to 4, it is characterized in that, the control signaling that the video gateway is sent to monitoring reception unit is carried by H.323 agreement, address, port numbers comprising audio stream and video flowing, coding/decoding information.12nd, the system according to claim 5 or 6, it is characterised in that the control signaling that the video gateway is sent to monitoring reception unit is carried by Session Initiation Protocol, address, port numbers comprising audio stream and video flowing, coding/decoding information.13rd, the system according to any one of claim 7 to 9, it is characterized in that, the control signaling that the video gateway is sent to monitoring reception unit is carried by RTSP agreements, address, port numbers comprising audio stream and video flowing, coding/decoding information.14th, system according to any one of claim 1 to 9, it is characterised in that the MSC server includes video monitor user judging unit, calling recognition unit and video monitor control unit；WhereinMonitoring users judging unit is when caller video terminal is initiated to call to called video terminal, and whether the caller and called number for judging calling are the number for being controlled user, if it is, routing the call to video call recognition unit；Otherwise, the normal call processing unit of MSC server is routed the call to；Video call recognition unit, when receiving the calling that monitoring users judging unit route is come, judges whether calling is video call, if it is, video call is routed into video monitor control unit；Otherwise, the processing unit of the monitoring audio call of MSC server is routed the call to；Video monitor control unit according to video call recognition unit route come video call, to regarding Frequency gateway sends two callings for corresponding to calling number and called number respectively, and instruction VIG foundation is contacted with MGW's；Indicating media gateway replicates the call data of caller and called video terminal respectively.15th, system according to any one of claim 1 to 9, it is characterised in that the MGW includes call data copied cells and call data transmitting element；WhereinCall data copied cells replicates the up call data of caller and called video terminal, then sends the up call Shuo Ju Fen Do of caller and called video terminal to call data transmitting element respectively under the instruction of MSC server；Call data transmitting element respectively sends the up call data of caller and called video terminal to video gateway.16th, the system any one of claim 6 to 9 is occupied, it is characterised in that the video gateway includes call processing unit, H.245 processing unit, data demultiplexing unit and media transmitting element；WhereinCall processing unit sends the number of caller and called video terminal to RTSP Website servers after the calling of MSC server is received；H.245 processing unit is when receiving the call data of caller and called video terminal, the call data of caller and called video terminal are respectively sent to data demultiplexing unit by the H.245 negotiation message included in the call data for deleting caller and called video terminal respectively；Video in the call data of caller video terminal is opened the call data that logic channel OLC message is copied to called video terminal by data demultiplexing process unit, according to caller and the Voice ＆ Video OLC message of the call data of called video terminal, sent respectively after demultiplexed audio and video stream to media transmitting element；Media send after resolution unit is respectively changed demultiplexed audio and video stream and sent to monitoring reception unit.17th, system according to any one of claim 1 to 6, it is characterised in that the video gateway includes H.245 processing unit, data demultiplexing unit and media transmitting element；Wherein, H.245 processing unit is when receiving the call data of caller and called video terminal, the call data of caller and called video terminal are respectively sent to data demultiplexing unit by the H.245 negotiation message included in the call data for deleting caller and called video terminal respectively；Video in the call data of caller video terminal is opened the call data that logic channel OLC message is copied to called video terminal by data demultiplexing unit, according to caller and the Voice ＆ Video OLC message of the call data of called video terminal, sent respectively after demultiplexed audio and video stream to media transmitting element；Media transmitting element is sent after demultiplexed audio and video stream is changed respectively to media transmitting element.18th, a kind of method of monitoring video-calling, for monitoring the video communication between caller video terminal and called video terminal, it is characterised in that including：When caller video terminal initiates video call to called video terminal, the call data of caller and called video terminal are replicated；Played from the call data of duplication after demultiplexed audio and video stream at monitoring reception end.19th, method according to claim 18, it is characterised in that further comprise：The number of controlled user is set；It is described the video data of caller and called video terminal is replicated respectively before, further comprise：Judge caller or called video terminal number whether be set controlled user number, if it is, being replicated respectively to the video data of caller and called video terminal.20th, method according to claim 18, it is characterised in that it is described call data are replicated after, from call data before demultiplexed audio and video stream, further comprise：The H.245 negotiation included respectively in the call data of termination caller and called video terminal；The video included in the call data of caller video terminal is opened into the call data that logical channel OLC message is copied to called video terminal.21st, method according to claim 20, it is characterised in that the calling from duplication Demultiplexed audio and video stream includes in data：According to the audio OLC message and video OLC message included in the call data of caller and called video terminal, demultiplexed audio stream and video flowing from the call data of caller and called video terminal respectively.22nd, method according to claim 18, it is characterised in that in the call data from duplication after demultiplexed audio and video stream, before monitoring reception end is played, further comprises：Enter row format conversion to demultiplexed audio and video stream.23rd, method according to claim 22, it is characterised in that described to enter to audio and video stream after row format conversion, further comprises：To the address of the audio stream and video flowing of the transmission caller of monitoring reception end and called video terminal, port numbers, coding/decoding information；Described played at monitoring reception end includes：According to the address of the audio stream and video flowing, port numbers and coding/decoding information, the audio stream and video flowing of simultaneously playing and calling and called video terminal are received at monitoring reception end.24th, method according to claim 23, it is characterised in that the address of the audio stream and video flowing to the transmission caller of monitoring reception end and called video terminal, port numbers, coding/decoding information include：The audio stream of caller and called video terminal and the address of video flowing, port numbers, coding/decoding information are sent to monitoring reception end by standard real-time stream media protocol RTSP declaration flow.25th, method according to claim 18, it is characterised in that in the call data from duplication after demultiplexed audio and video stream, before monitoring reception end is played, further comprises：Demultiplexed audio stream and video flowing are compressed, stored with stream media format file；The audio stream plays and video flowing include：Data to the stream media format file of storage are decompressed, and obtain playing after audio stream and video flowing.26th, method according to claim 18, it is characterised in that the call data to caller video terminal and called video terminal are copied as：The up call data of up call data and called video terminal to caller video terminal are replicated.
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| PCT/CN2006/001676 WO2007006237A1 (en) | 2005-07-14 | 2006-07-14 | A system for monitoring video call |
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| CN102843337A (en) * | 2011-06-20 | 2012-12-26 | 中兴通讯股份有限公司 | Method and device for monitoring media content in IP (internet protocol) multimedia sub-system |
| CN102843337B (en) * | 2011-06-20 | 2017-07-14 | 中兴通讯股份有限公司 | Media content monitor method and device in IP multimedia subsystem |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101156374B (en) | 2010-04-21 |
| ATE434312T1 (en) | 2009-07-15 |
| RU2369026C2 (en) | 2009-09-27 |
| EP1819097A1 (en) | 2007-08-15 |
| WO2007006237A1 (en) | 2007-01-18 |
| US20070268361A1 (en) | 2007-11-22 |
| EP1819097B1 (en) | 2009-06-17 |
| CN100384160C (en) | 2008-04-23 |
| CN1889469A (en) | 2007-01-03 |
| US7920578B2 (en) | 2011-04-05 |
| RU2007125542A (en) | 2009-01-20 |
| DE602006007304D1 (en) | 2009-07-30 |
| EP1819097A4 (en) | 2008-03-12 |
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